Update NEWS.md

Co-authored-by: Fanny Gautier <157114584+Fanny-Gautier@users.noreply.github.com>

Author: jwang-lilly

NEWS.md

@@ -4,6 +4,7 @@
 
 - Improved test coverage in `compute_centiloid()` function when invalid tracer combination is provided. The 
 function also now only accepts positive SUVR values. (#106)
+
 ## New features
 
 - The function `compute_upsit_percentile()` calculates percentiles based on age, sex, and UPSIT scores. (# 95)